because complaining is free. and this is America, where you are encouraged by the media and political system to embrace hypocrisy?
I don't know, I like to bitch about a lot of things. EA is not really high on that list anymore. The make FIFA, and it is awesome. But in all honesty, people like to complain for 1 of 2 reasons I think-
1. Hopping on the bandwagon of haters, easier to join a club on any internet site than voice your opinion with you wallet.
2. They think that complaining is a valid expression of their opinion, which it is, and that the more they complain that a company like EA might see it and listen.
Look at how MS responded to the Xbone before E3 last year. Complaining worked for change, and I still know people (myself included) whom will not buy another MS console after supporting the 360 for multiple years.
Basically, its takes all kinds. But in short, because we/they/us/you can.